“Without doubt, the uniting of hearts in holy wedlock is of all conditions the happiest, for then a man has a second self to whom he can unravel his thoughts as well as a sweet companion in his labour.”

Foreplay is important:

“I do advise, before they begin their conjugal embraces to invigorate their mutual desires and make their flames burn with a fiercer ardour by those endearing ways that love can better teach than I can write.”

Don’t hit it and quit it:

“… when they have done what nature can require, a man must have a care he does not part too soon from the embraces of his wife.”

Buuuut then you have the slightly less than useful stuff, such as the extremely scientific advice telling women how to avoid having ugly babies:

“The book even claims parents’ imaginations produce a child’s features and includes an illustration of a ‘maid all hairy and an infant that was born black by the imagination of the parents’,” Spencer explains.

“In fact, if women cast their eyes on ill-shaped bodies, ‘the force of imagination’ could produce a child with ‘a hairy lip, wry mouth or great blubber-lips’.

“Instead, during sex women were urged to ‘earnestly look upon the man and fix her mind upon him.’